Hi wu, I don't think it is a good choice to directly change the strategy of chain. Operator chain usually has better performance and resource utilization. If we directly change the chain policy between them, users can no longer chain them together, which is not a good starting point.
Best regards, Weijie wudi <676366...@qq.com> 于2023年2月16日周四 19:29写道： > Thank you for your reply. > > Currently in the custom Sink Connector, the Flink task will combine Writer > and Committer into one thread, and the thread name is similar: *[Sink: > Writer -> Sink: Committer (1/1)#0]*. > In this way, when the *Committer.commit()* method is very slow, it will > block the* SinkWriter.write()* method to receive upstream data. > > The client can use the *env.disableOperatorChaining() *method to split > the thread into two threads:* [Sink: Writer (1/1)#0] *and *[Sink: > Committer (1/1)#0]*. This Committer. The commit method will not block the > SinkWriter.write method. > > If the chain policy can be disabled in the custom Sink Connector, the > client can be prevented from setting and disabling the chain. Or is there a > better way to make* Committer.commit()* not block *SinkWriter.write()*? > > Looking forward for your reply. > Thanks && Regards, > di.wu > > 2023年2月16日 下午6:54，Shammon FY <zjur...@gmail.com> 写道： > > Hi > > Do you mean how to disable `chain` in your custom sink connector? Can you > give an example of what you want? > > On Wed, Feb 15, 2023 at 10:42 PM di wu <676366...@qq.com> wrote: > > Hello > > The current Sink operator will be split into two operations, Writer and > Commiter. By default, they will be chained together and executed on the > same thread. > So sometimes when the commiter is very slow, it will block the data > writer, causing back pressure. > > At present, FlinkSQL can be solved by disabling the chain globally, and > DataStream can partially disable the chain through the disableChaining > method, but both of them need to be set by the user. > > Can the strategy of the Chain be changed in the Custom Sink Connector to > separate Writer and Commiter? > > Thanks && Regards, > di.wu > > > >
